deus ex2 plz helllp!!!!

[xman]

i downloaded the demo but when i launch the game a black screen appears and then nothing happens.i tried launching it by tommti 3danalyze,but didnt work.any suggestions

[essexman]

wot specs do u have??
do u have the lastest drivers/directx installed??
wot windows are u running??

[xman]

500 mb ddr ram
15" monitor
40gb
p4 1.8 ghz
intel 845motherboard and graphix card

thats all i have